Mirjam Peternek-McCartney lost a third of her team when she told them she wanted to shake up the way her business, Lemongrass Marketing, was run. Mirjam recognised that in order to utilise the new data tools available in the digital age, she needed to have more dynamic teams. It's a shake up that has clearly worked. Mirjam's clients include &Beyond and Lanserhof Health Resorts. She sat down with us at TFest and told us about the difficulties of forging a new path, and the amazing marketing opportunities there are, hidden in big data.